Printer&#39;s quoin lock



1954 E. M. FOOTE ET AL PRINTERS QUOIN LOCK Filed Oct. 22, 1951 /nvnf0r E/mer Mason Foofe Freeman Barney I Aff f eg Eatented Aug. 10, 1954 PRINTERS QUOIN LOOK Elmer Mason Foote, Elmira, N. Y., and Freeman Barney, Spring Lake, Mich., assignors to The Challenge Machinery Company, Grand Haven, Mich, a, corporation of Michigan Application October 22, 1951, Serial No. 252,494

2 Claims.

This invention relates to printers quoins and, more particularly, concerns looking a printers quoin against accidental or other release thereof after it has been adjusted to lock type bars, electroplates or other materials, from which printing is made, in a form.

Printers quoins, in a form are subject to heavy service and must retain the locked type bars and the like so that they will not move or otherwise become ineffective. The quoins which are of the type shown in United States Letters Patent No. 2,501,949, granted March 28, 1950, operate by wedging action of two inclined planes riding upon each other on two members which are carried by a somewhat elongated supporting or body member, one of said members being movable longitudinally and the other transversely of said supporting member. The operation of the quoin is by moving the longitudinally movable member so that by the action of the engaging inclined planes on the two members the transversely movable member is moved outwardly. When the quoin has been operated to lock the form ready for printing, the present invention has for its object and purpose the provision of simple, practical and operative means for rendering impossible any longitudinal movement of the longitudinal member of the quoin, thus, preventing release of the quoin if it should tend to occur under vibration or shocks to which subjected in prnting.

To these ends, we have provided embodiments of the invention which positively serve the purpose of insuring that the quoin will remain in its holding or locking position until it is to be released. The structures which embody the invention are readily applied to printers quoins like those in the patent mentioned and, in the preferred form, remain with the quoin in either its operative or inoperative position so as not to become disassociated therefrom and lost.

An understanding of the invention may be had from the following description, taken in connection with the accompanying drawing embodying forms of our invention, in which drawing,

Fig. 1 is a plan view of the quoin at one end portion thereof illustrating our invention.

Fig. 2 is a horizontal section and plan, the plane of the section being substantially on the line 2-2 of Fig. 3.

Fig. 3 is a transverse vertical section through the quoin showing the lock in its operative position.

Fig. 4 is a like view showing the lock withdrawn and in inoperative position.

Fig. 5 is a view, similar to Figs. 3 and 4, showing another form of the invention but one which is not preferred, and

Fig. 6- is a somewhat enlarged perspective view of the quoin lock bolt used with the quoin of the aforesaid patent, or quoins of similar structure.

Like reference characters refer to like parts in the different figures of the drawings.

In the construction of a printers quoin, a channel member having a web I, and upper and lower spaced flanges 2 and 3 is provided and forms a housing for the assembly. Within the channel member, two elongated wedge members or bars are housed. The inner bar 4, at its outer side, is provided with a plurality of consecutive wedge surfaces 5 from one end thereof to the other. Bar 4 is longitudinally movable with respect to the channel member by which carried and in which it is housed. The member 3, between its ends, is formed with a short rack having consecutive teeth 6, adapted to be engaged by the in serted end of a removable key which in crosssection is like a pinion, and which key on being turned manually will move the inner wedge member 4 longitudinally in accordance with the direction that the key is turned.

The other or second wedging bar I is also elongated, of substantially the same length as the described channel and is somewhat longer than the wedging bar 4. At its inner side it has cooperating inclined faces 8 adapted, to ride or bear against the faces 5 of the bar 4. The outer bar 1 is provided with pins 9 extending therethrough, the ends of which are received in slots i0 transversely located in flanges 2 and 3 of the channel member. The upper channel 2 has an entrance it for the insertion of the key which operates the rack 6, and the key is guided by a vertically positioned arcuate guide 14, as shown i Fig. 2, and maintained in engagement with the rack when inserted. Slot li lengthwise of the flange 2 and pin l2 on bar & cooperates to limit the movement or the bar 4 and to secure such bar from disconnection.

In one form of the invention, shown in Fig. 5, the upper flange 2 may have a vertical opening therethrough over the rack 6, through which a headed pin I5 may be inserted after the quoin has been operated to force bar 'i outwardly to its form locking position. Such structure, however, is not preferred as the pin is liable to be lost. In use, it is inserted through the opening in the flange 2, the pin passing between two of the teeth 6, the opening located a little to one side of the key insertion opening l3.

In the preferred structure shown the outer bar I at its upper side and a short distance to one side of the openin 13 is provided with a shallow transverse groove 55. A locking bolt is made from a single piece of flat metal of the form best disclosed in Fig. 6. The outer end of the bolt is turned upwardly in a flange H, from the lower edge of which two spaced apart horizontal members l8 extend. The metal between the two spaced members I8 is struck from the plate, turned upwardly at the inner ends of the. parts [8 in a short vertical member [9, and continued in a horizontal section 20;whiehte rminates; in an angularly shaped lip 2 iasshown. The lip ,2! lies over an integral connecting part-220i the plate at the other ends of parts ES. From the'edge of part 22 two spaced teeth 23 project, shaped and formed and so spaced from each other that they are adapted to embrace one tooth .6 of the rack and enter the spaces between the next adjacent teeth 5, oneat each sideof the tooth which is embraced thereby.

When assembled with the rest of the quoin in the shallow groove IS, the upwardly extending portion'l9 passes through an opening 24 made in the upper flange 2, and the detent lip 21 of the bolt 29, extends over the upper side of such flange 2. In outer position, as in Fig. l, the teeth 23 are withdrawn and do not connect with the teeth 6 of the rack. In such position by operation of the key inserted at the opening I3, the quoin may beoperated to move the outer member l outwardly in locking a form. When the form is locked, the locking bolt is pushed inwardly to the position shown in Fig. 3, whereupon the latching detent 2| reaches a second opening 2 in line with the openingi i in the upper flange 2, the teeth 23 having been moved into engaging locking position with respect to the rack key 6 as shown in Fig. 2. When the quoin is to. be released, the locking bolt. is pulled back as in Fig. 4, whereupon the rack engaging key may be inserted through the opening l3 to release the quoin.

With the structure described, a quoin when it has been expanded to serve its purpose, is insurecl against accidental or any other unwanted release until the locking bolt has been withdrawn from its holding connection with the key 9. The bolt described is assembled with the quoin and is inseparable therefrom after the assembly is complete. The structure described is practical and effective, and by simple and, novel operation insures that the quoin shall remain locked in its expanded operative position and not release or be released therefrom until such release is wanted.

The invention is defined in the appended claims, and is to be considered comprehensive of all forms of structure coming within their scope.

We claim:

1. In a printers ,quoin, havi-ngan elongated body of channel form with an upper and lower horizontal flange and a vertical web integrally connecting said flanges at common edges thereof, an elongated wedging member against the inner side of the web mounted for longitudinal moveilange of the body, said second wedg-ing-member having a shallow slot in its upper side, transversely of the length of said member, in which the bolt is slidably mounted, said bolt at its inner end having a projection adapted to enter between teeth :of ,thexracksinone position of the bolt and be clearer the-rack in another position, and a -detent extending -upwardly from the bolt between the endsthereoisaid upper flange having an opening iorfiassage of the detent, said detent, above said flange, having a generally horizontal extension bearing against the upper side of the upper flange.

'2. In aprinterfs ,quoin, having an, elongated body of channel form with :an upper and lower horizontal flange and .a-vertical webintegrally connecting said1flanges at common-edges thereof, an elongatedwedging member against the inner side of the web mounted for longitudinal movement betwecnthe flanges a second wedging member against the first -wedg-ing .member, mounted for and held to transverse movements away from or toward the first wedging member, said first wedging member having a rack with spaced teeth between its ends, the improvement comprising, a lock bolt of thin metal located under the upper flange of the body, said second wedging member having a shallow slot in its upper side, transversely of the lengthof said member, in which the bolt is slidably mounted, said bolt at its inner end having a projection adapted to enter betweenteeth -of the rack in one position of the bolt and be clear of the rack in another position, and va detent extending upwardly from the bolt between the ends thereof, said upper-flange having an opening for passage of the detent, said ,detent, above said flange, having a generally horizontal extension bearing against the upperside of the upper flange and saidhorizontal detent extension, at its free end, having a downwardly extending portion, andsaidupper flange having a second opening to receive said portion when the lock bolt is moved .to en agcthe rack.

Beiierences 'Citediin the file of this patent UNITED STATES PATENTS Number Name Date 620,468 Lowery et a1 -F'eb. 28, 1899 638,072 Slauson Nov. 28,1899 657,254 -Slaus0n Sept. 4, 1900 736,077 Decker Aug. 11,1903 747,794 Stephens Dec. 22,;1903 1,015,893 'Keeler .:Jan. 30,1912 1,189,969 Kimball -July 4,1916 1,197,219 Mallory Sept. 5, 1.916 2,501,949 -Lee-et al Mar. 28,'1950 

